Radopholus similis does not occur in California (US)
In the second edition of Quarantine Pests for Europe, the presence of Radopholus similis (EPPO A2 quarantine pest) in California (US) was erroneously mentioned. Though R. similis has earlier been intercepted and eradicated, it is now known not to occur in California and quarantine measures are taken to prevent any further introduction. R. similis should be considered as absent from California.
Sources
CABI, 1998-09.